One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(3,4)(17,18)(19,23)(20,28)(21,27)(22,25)(24,29)(26,30)(31,32) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,10)(11,15)(12,14)(13,16)(17,19,22,21)(18,23,25,27)(20,29,31,26)(24,32,30,28)(1,3)(2,7)(4,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,20,21,29,22,31,19,26)(18,24,23,28,25,30,27,32)(1,4,5,3)(2,8,6,7)(11,16)(13,15)(17,18)(19,27)(20,30)(21,23)(22,25)(24,31)(26,28)(29,32)(2,6)(7,8)(10,14)(13,15)(17,19,22,21)(18,23,25,27)(20,26,31,29)(24,28,30,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.